Cantrip, because I've got a spell to steady me.

[Shostak]

Originally Posted by David Bofinger

And yet, there are so many spells a PC is unlikely to learn, and this is a way to get them cast from time to time. So I hate to kill the idea.

Scrolls accomplish this without the need for cumbersome wizard’s chests or additional rules.

I'd feel better if the ability to cast from books were a talent, and not an expensive chest, so it's part of the character and not part of their bank balance.

Scholar? Admittedly, it is ridiculously expensive for the benefit described, and doubly so for a wizard. See this thread on the main forum forum for some discussion.

I'd also be happy to see a class that had access to every spell, but suffered from other disadvantages, just because it would be different and encourage the use of some of the obscure spells that otherwise no one learns.

I agree with the general sentiment, but would advocate for a different method to achieve the goal: just let anyone learn anything they want at the same cost—I’ve been doing it since the ‘80s with no game imbalance. The rules for iron and magic already provide some sacrifice if you want to wield both, and the requirement to use ST to cast spells provides another. If you want diversity, taking down barriers that encourage separating characters into identity groups will be more efficient than building more pigeon holes with rules to go along with them.